| /* |
| * Copyright 2017 HugeGraph Authors |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with this |
| * work for additional information regarding copyright ownership. The ASF |
| * licenses this file to You under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package com.baidu.hugegraph.config; |
| |
| import java.io.File; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| |
| import com.baidu.hugegraph.util.E; |
| import com.baidu.hugegraph.util.Log; |
| import org.apache.commons.configuration2.Configuration; |
| import org.apache.commons.configuration2.FileBasedConfiguration; |
| import org.apache.commons.configuration2.PropertiesConfiguration; |
| import org.apache.commons.configuration2.YAMLConfiguration; |
| import org.apache.commons.configuration2.builder.FileBasedConfigurationBuilder; |
| import org.apache.commons.configuration2.builder.fluent.Configurations; |
| import org.apache.commons.configuration2.builder.fluent.Parameters; |
| import org.apache.commons.configuration2.ex.ConfigurationException; |
| import org.apache.commons.configuration2.io.FileHandler; |
| import org.apache.commons.io.FilenameUtils; |
| import org.apache.commons.lang3.StringUtils; |
| import org.slf4j.Logger; |
| |
| import javax.annotation.Nullable; |
| |
| public class HugeConfig extends PropertiesConfiguration { |
| |
| private static final Logger LOG = Log.logger(HugeConfig.class); |
| |
| private final String path; |
| |
| public HugeConfig(Configuration config) { |
| loadConfig(config); |
| this.path = null; |
| } |
| |
| public HugeConfig(String configFile) { |
| loadConfig(loadConfigFile(configFile)); |
| this.path = configFile; |
| } |
| |
| private void loadConfig(Configuration config) { |
| if (config == null) { |
| throw new ConfigException("The config object is null"); |
| } |
| this.setLayoutIfNeeded(config); |
| |
| this.append(config); |
| this.checkRequiredOptions(); |
| } |
| |
| private void setLayoutIfNeeded(Configuration conf) { |
| if (!(conf instanceof PropertiesConfiguration)) { |
| return; |
| } |
| PropertiesConfiguration propConf = (PropertiesConfiguration) conf; |
| this.setLayout(propConf.getLayout()); |
| } |
| |
| private static Configuration loadConfigFile(String path) { |
| E.checkNotNull(path, "config path"); |
| E.checkArgument(!path.isEmpty(), |
| "The config path can't be empty"); |
| |
| File file = new File(path); |
| return loadConfigFile(file); |
| } |
| |
| @SuppressWarnings("unchecked") |
| public <T, R> R get(TypedOption<T, R> option) { |
| Object value = this.getProperty(option.name()); |
| if (value == null) { |
| return option.defaultValue(); |
| } |
| return (R) value; |
| } |
| |
| public Map<String, String> getMap(ConfigListOption<String> option) { |
| List<String> values = this.get(option); |
| Map<String, String> result = new HashMap<>(); |
| for (String value : values) { |
| String[] pair = value.split(":", 2); |
| E.checkState(pair.length == 2, |
| "Invalid option format for '%s': %s(expect KEY:VALUE)", |
| option.name(), value); |
| result.put(pair[0].trim(), pair[1].trim()); |
| } |
| return result; |
| } |
| |
| @Override |
| public void addPropertyDirect(String key, Object value) { |
| TypedOption<?, ?> option = OptionSpace.get(key); |
| if (option == null) { |
| LOG.warn("The config option '{}' is redundant, " + |
| "please ensure it has been registered", key); |
| } else { |
| // The input value is String(parsed by PropertiesConfiguration) |
| value = this.validateOption(key, value); |
| } |
| if (this.containsKey(key) && value instanceof List) { |
| for (Object item : (List<Object>) value) { |
| super.addPropertyDirect(key, item); |
| } |
| } else { |
| super.addPropertyDirect(key, value); |
| } |
| } |
| |
| @Override |
| protected void addPropertyInternal(String key, Object value) { |
| this.addPropertyDirect(key, value); |
| } |
| |
| private Object validateOption(String key, Object value) { |
| TypedOption<?, ?> option = OptionSpace.get(key); |
| |
| if (value instanceof String) { |
| return option.parseConvert((String) value); |
| } |
| |
| Class dataType = option.dataType(); |
| if (dataType.isInstance(value)) { |
| return value; |
| } |
| |
| throw new IllegalArgumentException( |
| String.format("Invalid value for key '%s': '%s'", key, value)); |
| } |
| |
| private void checkRequiredOptions() { |
| // TODO: Check required options must be contained in this map |
| } |
| |
| public void save(File copiedFile) throws ConfigurationException { |
| FileHandler fileHandler = new FileHandler(this); |
| fileHandler.save(copiedFile); |
| } |
| |
| @Nullable |
| public File getFile() { |
| if (StringUtils.isEmpty(this.path)) { |
| return null; |
| } |
| |
| return new File(this.path); |
| } |
| |
| private static Configuration loadConfigFile(File configFile) { |
| E.checkArgument(configFile.exists() && |
| configFile.isFile() && |
| configFile.canRead(), |
| "Please specify a proper config file rather than: '%s'", |
| configFile.toString()); |
| |
| try { |
| String fileName = configFile.getName(); |
| String fileExtension = FilenameUtils.getExtension(fileName); |
| |
| Configuration config; |
| Configurations configs = new Configurations(); |
| |
| switch (fileExtension) { |
| case "yml": |
| case "yaml": |
| Parameters params = new Parameters(); |
| FileBasedConfigurationBuilder<FileBasedConfiguration> |
| builder = new FileBasedConfigurationBuilder( |
| YAMLConfiguration.class) |
| .configure(params.fileBased() |
| .setFile(configFile)); |
| config = builder.getConfiguration(); |
| break; |
| case "xml": |
| config = configs.xml(configFile); |
| break; |
| default: |
| config = configs.properties(configFile); |
| break; |
| } |
| return config; |
| } catch (ConfigurationException e) { |
| throw new ConfigException("Unable to load config: '%s'", |
| e, configFile); |
| } |
| } |
| } |